Differences between version 19 and revision by previous author of NTPServers.
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| Newer page: | version 19 | Last edited on Friday, February 1, 2013 3:39:18 am | by AristotlePagaltzis | Revert |
| Older page: | version 16 | Last edited on Friday, February 1, 2013 1:43:00 am | by SamBailey | Revert |
@@ -1,29 +1,48 @@
-!!! NTP Servers in New Zealand
+!!! [
NTP]
Servers For Everyone
-There is a pool of servers at <tt>nz.pool.ntp.org</tt>, which provides [Round Robin DNS|RoundRobin] access to publicly accessible [NTP] servers that have agreed to be part of the pool.
+!! In NewZealand
-Many ISPs
have NTP servers for their customers:
+There is a pool of servers at <tt>nz.pool.ntp.org</tt>, which provides RoundRobin [DNS] access to publicly accessible [NTP] servers that have agreed to be part of the pool.
+
+
Many [ISP]s
have [
NTP]
servers for their customers:
* <tt>ntp.iprolink.co.nz</tt>
* <tt>ntp.iconz.co.nz</tt>
* <tt>tk1.ihug.co.nz to tk3.ihug.co.nz</tt>
* <tt>time.paradise.net.nz</tt>
+
+or you could try querying your [ISP]'s [DNS] servers with <tt>ntp</tt> or <tt>ntp1</tt>.
Some universities have publicly accessible servers:
* <tt>ntp.public.otago.ac.nz</tt> (Please notify before using)
* <tt>ntp.massey.ac.nz</tt>
-For a long time [Waikato University|
WaikatoUniversity]
had public NTP servers. They are still available but no longer publicly accessible.
+For a long time WaikatoUniversity had public [
NTP]
servers. They are still available but no longer publicly accessible.
-!! Stratum 1 Servers in New Zealand
+!! In other countries
-You shouldn't synchronise to a stratum one
server for your small network -- if everyone did that then the server would need too much bandwidth. The difference in accuracy between synching
to a stratum 1 server and a lower stratum server is negligible! [more|http://list
.waikato.ac.nz/pipermail/nznog/2001-October/003705.html]
+<tt>pool.ntp.org</tt> has [NTP] server pools for many countries.
+
+* <tt>au.pool.ntp.org</tt> Australia
+* <tt>us.pool.ntp.org</tt> United States
+* <tt>de.pool.ntp.org</tt> Germany
+* Etc. Try <tt>''cc''.pool.ntp.org</tt>, where ''cc'' is a country code.
+
+[List of public German NTP servers | http://www.hullen.de/helmut/filebox/DCF77/ntpsrvr.html].
+
+!!! Stratum 1 Servers
+
+First: __be nice!__
You shouldn't synchronise to a stratum 1
server for your small network -- if everyone did that then the server would need too much bandwidth. For example. NetGear hard-coded a public [NTP] server into some of their consumer products, which eventually ended up using hundreds of Mbits/second of the university's bandwidth, even after they were forced to shut down the server.
+
+
The difference in accuracy between syncing
to a stratum 1 server and a lower stratum server is negligible.
+
+!! NewZealand
! .nz Registry Services
-There are three stratum 1 NTP servers provided by .nz Registry Services (NZRS) for network operators based within New Zealand. [more
|http://ntp.net.nz/]
+There are [
three stratum 1 NTP servers provided by .nz Registry Services (NZRS)|http://ntp.net.nz/] for network operators based within New Zealand.
* <tt>s1.ntp.net.nz</tt> in Albany connected to [FX].
* <tt>s2.ntp.net.nz</tt> in Auckland connected to [ICONZ] and [APE].
* <tt>s3.ntp.net.nz</tt> in Wellington connected to [FX] and [WIX].
@@ -39,29 +58,32 @@
* <tt>msltime2.irl.cri.nz</tt>
They are FreeBSD-based servers that are directly connected to their master HP5071A caesium clock. [more|http://msl.irl.cri.nz/services/time-and-frequency/ntp-server-information]
-!! Stratum 1 Servers in other countries
+!! United States
-! United States
-
-accessable
stratum 1 time servers on the pacific
coast of the US. These servers are referenced to UTC(NIST) using the NIST Automated Computer Time Service (ACTS), a modem
-based service established in 1988. [more|http://tf.nist.gov/tf-cgi/servers.cgi]
+The US National Institute of Standards and Technology ([
NIST]
) operates [
several publicly accessible
stratum 1 time servers|http://tf.nist.gov/tf-cgi/servers.cgi]
on the Pacific
coast of the US. These servers are referenced to UTC(NIST) using the NIST Automated Computer Time Service (ACTS), a MoDem
-based service established in 1988.
* <tt>nist1.symmetricom.com</tt> San Jose, California
* <tt>nist1-sj.ustiming.org</tt> San Jose, California
* <tt>nist1-la.ustiming.org</tt> Los Angeles, California
* <tt>nist1.aol-ca.symmetricom.com</tt> Mountain View, California
-The US Naval Observatory (USNO) operates several stratum 1 time servers from it's
Alternate Master Clock Facility (AMCF) at [Schriever Air Force Base
|http://en
.wikipedia
.org/wiki
/Schriever_Air_Force_Base], [near Colorado Springs|http://maps.google.com/maps?q=schriever+afb], on the same site as the GPS Master Control Station. These servers are referenced to UTC(USNO). [more|http://tycho.usno.navy.mil/clocks.html]
+The US Naval Observatory (USNO) [
operates several stratum 1 time servers from its
Alternate Master Clock Facility (AMCF)|http://tycho
.usno
.navy.mil
/clocks.html] at [Schriever Air Force Base|WikiPedia:
Schriever_Air_Force_Base], [near Colorado Springs|http://maps.google.com/maps?q=schriever+afb], on the same site as the [
GPS]
Master Control Station. These servers are referenced to UTC(USNO).
* <tt>tick.usnogps.navy.mil</tt>
* <tt>tock.usnogps.navy.mil</tt>
-! Australia
+Hurricane electric [operates several stratum 1 servers with good connectivity|http://www.he.net/adm/ntp.html] on the Pacific coast of the US.
+
+* <tt>clock.sjc.he.net</tt> San Jose, California (CDMA, Endrun Praecis CNTP)
+* <tt>clock.fmt.he.net</tt> Fremont, California (GPS, Symmetricom NTS-150)
+
+!
! Australia
-The Australian National Measurement Institute (NMI) maintains the Australian time standard, UTC(AUS) using caesium and hydrogen maser standards. NMI maintains a number of NTP servers which are referenced to UTC(AUS). To use these servers, you need to register via email. [more
|http://www.measurement.gov.au/Services/Pages/TimeandFrequencyDisseminationService.aspx]
+The Australian National Measurement Institute (NMI) maintains the Australian time standard, UTC(AUS) using caesium and hydrogen maser standards. NMI [
maintains a number of NTP servers which are referenced to UTC(AUS)|http://www.measurement.gov.au/Services/Pages/TimeandFrequencyDisseminationService.aspx]. To use these servers, you need to register via [Email].
-!! See also
+!
!! See also
* [NTPNotes]
* TimeSources
-* [Scientific study from 1999 on the topology of the country's main NTP servers | http://www.cosc.canterbury.ac.nz/research/reports/TechReps/1999/tr_9901.pdf ]
+* [Scientific study from 1999 on the topology of the country's main NTP servers | http://www.cosc.canterbury.ac.nz/research/reports/TechReps/1999/tr_9901.pdf ] (note that [GPS] is much more widely available now)
